Abstract
Lactic acid bacteria are nonpathogenic bacteria commonly used in food processing. An evaluation was made of the capacity to concentrate selenium in species of Lactobacillus. A selenium concentration of 1 μg/mL in the culture medium yielded in a bacterial content of 400 μg/g dry biomass. Dialysis and TCA precipitation experiments of a native intracellular extract proved that at least 80% of the total selenium is associated with organic molecules. Seleno-cysteine was identified as the only seleno-amino acid present in the intracellular selenoproteins. This study shows that species of the lactic acid bacteria are able to concentrate selenium intracellular as seleno-cysteine, which could be applied in supplementation studies.
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Calomme, M., Hu, J., Van Den Branden, K. et al. Seleno-lactobacillus. Biol Trace Elem Res 47, 379–383 (1995). https://doi.org/10.1007/BF02790140
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DOI: https://doi.org/10.1007/BF02790140